Spectre is a novel written by David Robbins. It was first published in 1988.
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A mound of freshly piled earth trembled fiercely; the sound of desperate clawing grew louder and louder, until finally a hand burst forth, pushing itself into the world like a child from a hellish womb. As silent and insubstantial as a shadow, it had the strength of ten men, and butchered its victims with a ferocity and brutality unmatched in history. It had come from beyond the grave--and no one knew how to send it back.